package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioProperties minioProperties;

    @Override
    public String uploadFile(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //判断桶是否存在
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
        //若不存在，则创建桶以及访问权限
        if (!bucketExists) {
            //创建桶
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            //设置权限
            String policy = """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }""".formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().
                    bucket(minioProperties.getBucketName())
                    .config(policy).build());
        }
        //向桶传递文件
        //文件名
        String objectName = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID().
                toString().replaceAll("-","") + "_" + file.getOriginalFilename();

        minioClient.putObject(PutObjectArgs.builder().bucket(minioProperties.getBucketName()).object(objectName).
                stream(file.getInputStream(),file.getSize(),-1).contentType(file.getContentType()).build());

        return String.join("/", minioProperties.getEndpoint(),minioProperties.getBucketName(),objectName);
    }
}